75% less brightness variation vs. conventional products contribute to improved performance and reduced design loadKYOTO, Japan and SANTA CLARA, Calif., Dec. 15, 2015 — (PRNewswire) — ROHM has recently announced the availability of high accuracy single-rank 1608-size high-brightness chip LEDs optimized for a wide variety of applications, from industrial equipment and consumer devices to automotive systems.
The need to reduce brightness variations is increasing as a greater number of applications and devices, particularly in the automotive and industrial sectors, are demanding improved consistency when configuring multiple LEDs side-by-side. However, up to now it has been difficult to minimize brightness variations during the manufacturing process. Conventionally, users were able to only narrow down the number of ranks from around 4 to 2-3, which still required sorting and the use of different resistors to match each rank, increasing the number of man-hours required along with inventory management.
In response, the SML-D15 series was developed using a comprehensive, highly integrated manufacturing system (from device fabrication), allowing ROHM to surpass the limits of conventional LED production. As a result, high-accuracy brightness is achieved and brightness variations reduced by 75%. This makes it possible to provide a single rank of brightness (a rarity in the industry), significantly lightening design load.
In addition, by optimizing the LED element ROHM was able to improve brightness by up to 3x over conventional products, delivering class-leading brightness in the 1608 size (1.6mm x 0.8mm). The LEDs are also AEC-Q101 qualified, making them suitable for applications demanding increased reliability such as automotive systems.
1．Single rank capability eliminates brightness variations
Conventionally, customers ordering a specific brightness level would receive 4 different brightness ranks due to limitations in production technology. In contrast, leveraging its industry-leading comprehensive, integrated manufacturing process allowed ROHM to achieve breakthrough accuracy that reduces brightness variations by 75%, making it possible to provide single-rank products that provide unmatched consistency in end-applications while significantly reducing design load.
2. Class-leading brightness in the 1608 size
Complete redesign and optimization of the LED element have enabled the brightness to be increased by up to 3 times compared with conventional LEDs, delivering industry-leading brightness in the 1608 size (1.6x0.8mm).
About ROHM Semiconductor
ROHM Semiconductor is an industry leader in system LSI, discrete components and module products, utilizing the latest in semiconductor technology. ROHM's proprietary production system, which includes some of the most advanced automation technology, is a major factor in keeping it at the forefront of the electronic component manufacturing industry. In addition to its development of electronic components, ROHM has also developed its own production system so that it can focus on specific aspects of customized product development. ROHM employs highly skilled engineers with expertise in all aspects of design, development and production. This allows ROHM the flexibility to take on a wide range of applications and projects and the capability to serve valuable clients in the automotive, telecommunication and computer sectors, as well as consumer OEMs.
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SOURCE ROHM Semiconductor